Rotary pump



` Mmh 2,1926.

' 1,575,405 L. ANDERSON ROTARY PUMP v Filed May 14 1925 2 Sheets-Sheet 2 J'/ J7 Y Patented Mar. 2, 1926.

UNITED STATES LABS ANDERSON, OFCHIFCAGO, ILLINOIS.

normar rum.

Application led May 14, 1925. Serial No. 30,141.

To all whom t may concern.'

Be it known that I, LARs ANDERSON, Aa citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois,` have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

This invention relates to improvements in rotary pumps in which the rapid rotation of the rotor is utilized for the purpose of pumping fluids, compressing air and gases, `and for producing vacuums, and one of the objects of the invention is tok improve and simplify the constructionvof a pumpy of this character and at the same time providey improved means whereby the wear between the relatively movable parts may be compensated or taken up. v Y

To the attainment of these vends and the 'accomplishment ofI other f new and' useful objects as will appear, the 'invention con-r sists in the features of novelty insubstantially the construction, combination and arrangement of the several parts hereinafter more fully described and' claimed and shown in the accompanying drawingsl illustrating this invention, and in which- Figure 1 is a side elevation of a pump of this characterconstructed. in accordance with the# principles of this invention and showing lthe same attached tothe shaft of a 4 Fig. 2 is a vertical longitudinal sectional view as taken on line 2 2, Figure 3.

Figure 3-is a sectional'view as taken on line 3 3, Figure 1.

Figure 4 is a sectlonal view as'` taken on ,line 4-4, Figure 2.

- pump may be attached.

Figure 5 isa detail perspective view of the end of the motor shaft -to which the Figure 6 is a detail perspective view of the rotor with the blades and co-operating parts omitted.

'. Figure? is a detail perspective view of the member which constitutes one of the wallsv of the rotor casing.

Figure 8 is a detail sectional view with parts omitted and as taken on line 8-8, Figure 2.

v Figure 9 is a detail perspective View of the supporting element for the member shown in Figure 7 Figure 10 is a detail perspective view, showlng the parts separated, of the floating member for controlling the movements oi` theV blades.

' Figure 11 is a detail one of the blades.

Referring more particularly to the drawings t-he numeral designates generally a perspective view of rotor casing having an inlet 16 and an out-1 let 17.

- `Within the casing is provided a chamber 18`in whichia rotor 19 operates. The rotor is provided with'a hub 20 journaled inthe wall of Ithe casing in a mannenthatlthe rotor will` be eccentrically mounted within the chamber 18. That is the diametricjcenter of the 'rotor will be to one side of vthe diametric center of the chamber.

\ jThe hub 20 of th'e lrotor is preferably hollow as at 21 and the extremity thereof is provided with notches 22 toreceive pinsor llugs 23 which are carried by'the lshaft of a motor 25. i j l Suitable packing 26 is provided, and with which packing a packing gland 27 co-,operates. A portion ofy the periphery of the gland v27l is threaded to co-operate with threads in the wall ofthe bearing andthe gland 27 may bel adjusted by' means Iolf a` suitable tool, openings 28 being provided in the gland for the reception of the tool.

The rotor 19 is provided with a plurality` of radially arranged grooves or slots 29 and the central portion of the rotor is cut away to form a chamber 30 in which chamber a oating 'memberl operates. This floating member is of an external diameter considerably less than the diameter of the chamber 30, 'and the member preferably embodies two elements' 31,--32 detachably connected together, one of the members beingv 'provided with a hollow hub like portion 33,

having interior screw threads and the other member is provided withA a hub portion 34y ,having exterior screw threads adapted to able manner` and are held in their adjusted y position by means of a fastening, device, such as a screw or the like; which is threaded into an opening 37 in the member 32 andy operates to orce the portions of the hub 31 away from each other ,to bind or lock the members 31 and 32 in their adjusted position.

The peripheries ofthe members 3 1 and 32 are respectively beveled or inclined as at 38-39, and against which beveled porltlilons the beveled extremities 40 of the blades rest.

These blades 41 iit and slide within the slots 29 and their inner extremities enga and rest against the periphcries of t e members 31-32.

As the rotor is rotated the blades 41 will be moved lon itudinally through the medi um of the wa' of the chamber 18 and the floating member.

By adjusting the elements 31 and 32 of the floating member relatively with respect to each other, the wear between the ends 'of the blades 41 and the wall of the chamber 18 may be taken up.

A member 42 constitutes one of the walls of the rotor chamber and is provided with a hub 43 having exterior threads. A suplgranting member f44 is provided for the memr 42, and through which supporting member 44 the hub 43 of the member 42 is threaded. The vmember 44 is provided with external 'screw threads 45 which co-operate with threads in a recessed portion of the rotor casing and which recessed portion is provided with 'a beveled or inclined surface 46, with which a beveled or inclined sur- 4face 47 on the' member 44 co-operates so that when the member 44 is-placed in position it will not only support the member 42 but the surface 47 of the member 44 will l co-operate with the beveled or inclined sur face 46 and thereby form a fluid tight joint. -By adjusting the member 42 in the member 44 the member 42 may be adjusted with respect to the lateral face of the rotor and the blades'41 and thereby compensate or may be provided a wing` or projection 50 carried by one end vof the elements of the floatingl member, and which projection extends between two of the adjacent Y It is thought that the operation of this device will be clearly understood from the' foregoing, but briefly stated it is as follows. The iioating member dispose-d between the inner ends of the blad'es serves-as an. abutment for the blades and also as a means for causing a corresponding longitudinal movement of diametrically opposite blades, and also' .serves as a means whereby the wear between the ends of the-blades and the wall of the rotor casing ma be taken up.

This may be accomplish by removing the members 44 and 42 so that vaccess may be had to the floating member..

As the rotor rotates the blades 41 will be successively moved longitudinall and as theypass the opening 16' the duid will be drawn into the rotor. chamber and from the halnlber will be discharged through the out- Suitable means 51 may be provided for lubrication pu With this improved construction it Will be manifest that the parts will be comactly arranged and may be readily attache to a motor casing so that the shaft of the motor may be readilyconnected with the hub of the rotor.

While the preferred formof the invention has been hereinshown and described it is to be understood that various changes may be made in the details ojconstruction and in the combination andarrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new' is 1. A rotary qluxnpl including a cylindrical chamber, a cy drical rotor eccentrically rotating therein," radially slidable. blades carried by the rotor, a oating element with which the inner ends of the blades have abutment, and means for causingthe ilo'atmg element to rotate with the rotor. j

2. A rotary pum including a cylindrical chamber, a cylin cal rotor eccentrically .rotating therein, radially slidable blades carried by the rotor, a floating element with which the inner ends of the blades have abutment. and a formation' carried by the oating element and projecting between two adjacent blades for causing the floating element to rotngte with the rotor.

3. A rotatif-pump including a cylindrical chamber, a cylindrical rotor eecentrically rotating therein, radially slidable blades carried by the rotor, and a floating element with which, the` inner ends of the blades abut for causing the sliding movements o f the blades, said element including parts relatively adjustable' to compensate wear on the ends of the blades.

4. A rotarypump 'including 'a chamber,

a rotor eccentrically rotating tliercin,"rad1 ally slidable blades carried by the rotor, and

a floating element with which the inner ends of the blade have abutment to effect the sliding of the blades, said element including opposed laterally and relatively adjustable members each of which has engagement with the blades.

5. A rotary pump including a chamber, a rotor ecoentrically' rotating therein, radially slidable blades carried by the rotor,

a floatil. `element with which th inner ends of the lade vhave abutment to effect the sliding of the blades, said element includin opposed laterally and relatively adjustab e members each of which has engagement with the blades, and a rojection connected with one of said mem rs and projecting between two adjacent blades to cause the oating element to rotate with the rotor.

6. A rotary pump including a chamber, a rotor eccentrically rotating therein, radially slidable blades carried by the rotor, a float- -in element with which the inner ends of the blades have abutment to effect the sliding of the blades, said element including opposed laterally and relatively adjustable members each of which has engagement with the blades, and means 'for 4locking said members in their relatively adjusted positions.

7. A rotary pump including a chamber, a rotor eccentrically rotating therein, radially slidable blades carried by the rotor, anda floating element adjacent the proximate ends of the blades for effecting a sliding movement of the blades, said element including opposed j laterally and relatively adjustable members each of which has engagement with the blades, said members having telescoping and adjustably connected portions.

8.` A rotary pump including a chamber a rotor eccentrically rotating therein, radially slidable blades carried by the rotor, a floating element adjacent the proximate ends of the blades for electin a slidingv movement of the blades, said e ement including o posed laterally and relatively adjustab e members each of which has engagement with the blades said members having telescoping and adjustably connected portions, and a formation on one of said members projecting between adjacent blades for eiecting rotation' of said floating element. Y'

9. A rotatary pump including a "chamber, a rotor eccentric-a ly rotating therein,'radially slidable blades carried by the rotor, and a. floating element adjacent and engaging the proximate ends of the blades, said rotor includin laterally spaced members the proximate aces of which diverge in directions troni the axis of the element towards the peripheries thereof, the proximate end of the lades tapering from the edges thereof outwardly and in directions towards the longitudinal axis of the blade.

In testimony whereofl I have signed my name to this specification, on this 8th day of May, A. D. 1925.

LARS ANDERSON. 

